Open file with double click, syntax error

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Hi everyone!

I want to open a .htm file in my application by double clicking.
So i have written These Code in main.cpp:

for ( int i = 1; i < argc; ++i )
    mainWin.load(argv[i]);

And These in mainwindow.h

void load(char *fileName);

And now i'm getting These Errors:

C:\Users\Henrik\Documents\TextPad\mainwindow.h:147: Fehler: 'void MainWindow::load(char*)' is private
 void load(char *fileName);
      ^

C:\Users\Henrik\Documents\TextPad\main.cpp:28: Fehler: within this context
     mainWin.load(argv[i]);
                         ^

Does anybody know why the Errors are there and how to fix them?

Thanks,
Henrik

raven-worx

as the error says the load() method is private.
But you are trying to access it "from the outside" of the class. Declare it as public.

jsulm

As the error message already says: you put load() in private section in your class, put it in public.

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@jsulm

C:\Users\Henrik\Documents\TextPad\main.cpp:28: Fehler: undefined reference to `MainWindow::load(char*)'

C:\Users\Henrik\Documents\build-TextPad-Desktop_Qt_5_5_1_MinGW_32bit2-Debug\debug\moc_mainwindow.cpp:350: Fehler: undefined reference to `MainWindow::load(char*)'

jsulm

Did you define load() method?
I mean (usually) in cpp file:

void MainWindow::load(char*)
{

}

How experienced are you with C++?

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@jsulm
No, i don't...
What should i write in the method?

My experiences are not so good... I read a lot of book... Reading the Code is no Problem but writing is very hard for me...

jsulm

The method can be empty like in the example I gave.
What you should write there is something you should know as it is your program.
I guess you want to open a file and read its content, right? Then do it using QFile.

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@jsulm
Yes i want to open the file...

 QString fileName = QFileDialog::getOpenFileName(this, tr("Öffnen..."),
                                                   QString(), tr("TextPad 1.0 (*.htm);;"));
   QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);

   QFile file(fileName, this);

   if (!file.open(QIODevice::ReadOnly | QIODevice::Text))
   {
      qDebug() << "Fehler beim Öffnen der Datei";
   }

   if (document())
   {
      document()->clear();
   }

   document()->setHtml(file.readAll());
   file.close();

Something like that?

jsulm

You already pass file path as parameter to the load() method.
In this case there is no need for:

QString fileName = QFileDialog::getOpenFileName(this, tr("Öffnen..."),
                                                   QString(), tr("TextPad 1.0 (*.htm);;"));

// This line does not make any sence because you do not use its return value
QStandardPaths::writableLocation(QStandardPaths::GenericDataLocation);

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@jsulm
Yes. I tried before your post and it works!

Thank you all...